<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>闰年计算</title>
</head>
<body>
<h1>1949到2024之间闰年的数量</h1>
<%!
    int countLeapYear(int year1, int year2) {
        int count = 0;
        for(int i = year1; i <= year2; i++) {
            if(i % 4 == 0 && i % 100 != 0 || i % 400 == 0) {
                count++;
            }
        }
        return count;
    }
%>

<%
    int leapYearCount = countLeapYear(1949, 2024);
%>

<p>1949到2024之间闰年的数量为: <%= leapYearCount %> 个</p>
</body>
</html>
